.toc-item {
    font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";
    line-height: 1.5;
}

.toc-wrapper {
  position: fixed;
  top: 200px;
  left: 2%;
  width: 260px;
  max-height: 80vh;
  overflow-y: auto;
  padding: 1rem;
  border-left: 3px solid #eee;
  font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";
  line-height: 1.5;
  
  /* 滚动条美化 */
  scrollbar-width: thin;
  scrollbar-color: #666 transparent;
}

.reward {
    position: fixed;
  top: 200px;
  right: 2%;
  width: 260px;
  max-height: 80vh;
  overflow-y: auto;
  padding: 1rem;
  font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";
  line-height: 1.5;
  
  /* 滚动条美化 */
  scrollbar-width: thin;
  scrollbar-color: #666 transparent;
}

/* 目录层级样式 */
.toc ul { list-style:none; padding-left:1rem; }
.toc li { margin:0.4rem 0; }
.toc a { color:#666; transition:color 0.3s; }
.toc a:hover { color:#4285f4; }
